Heavy water is “heavy” because it contains deuterium.
There were about 80 deuteriums for every million protiums, and virtually no tritium.
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Deuterium — Deutérium Hydrogène 2 table General Nom, Symbole deutérium, 2H Neutrons 1 Protons 1 … Wikipédia en Français
deutérium — [ døterjɔm ] n. m. • 1934; de deutér(o) et ium ♦ Phys., chim. Élément atomique (D; no at. 1; m. at. 2), isotope stable de l hydrogène, appelé aussi hydrogène lourd, et dont le noyau (⇒ deuton) contient un proton et un neutron. Le deutérium,… … Encyclopédie Universelle
deuterium — Symbol: D Atomic weight: 2 A hydrogen atom which has but one proton and neutron. Deuterium makes up about 0.015% of all natural hydrogen. Chemical properties are like that of normal hydrogen, though somewhat slower … Elements of periodic system
Deuterium — См. Дейтерий Термины атомной энергетики. Концерн Росэнергоатом, 2010 … Термины атомной энергетики
deuterium — DEUTÉRIUM s.n. v. deuteriu. Trimis de LauraGellner, 13.09.2007. Sursa: DN … Dicționar Român
deuterium — 1933, coined by U.S. chemist Harold C. Urey, with Mod.L. ending, from Gk. deuterion, neut. of deuterios having second place. So called because it is twice the mass of hydrogen … Etymology dictionary
deuterium — ► NOUN Chemistry ▪ a stable isotope of hydrogen with a mass approximately twice that of the usual isotope. ORIGIN Latin, from Greek deuteros second … English terms dictionary
deuterium — ☆ deuterium [do͞o tir′ē əm, dyo͞otir′ē əm ] n. [ModL: see DEUTERO & IUM] a hydrogen isotope used in nuclear reactors, accelerators, etc.: symbol, D; at. wt., 2.0141: see HEAVY WATER … English World dictionary
Deuterium — Hydrogen 2 Full table General Name, symbol deuterium, 2H or D Neutrons 1 … Wikipedia
Deuterium — Strukturformel Allgemeines Name Deuterium Andere Namen … Deutsch Wikipedia
Deutérium — Hydrogène 2 table Général Nom, Symbole deutérium, 2H Neutrons 1 Protons 1 Donn … Wikipédia en Français
